Tiieodor ilttlssner and paul roiirig



n Patented Oct. 257 |898. T. HULSSNEB P. RDHRIG.

SEWAGE FILTER.

(Applieation filed` Mar. 1, 189B.)

(No Model.)

w/ TN 555s..

INVENTO/.- ommt MM M UNITED dTnfrns "ATENT Dindon.

TIIEODOR HLSSNER AND PAUL RHRIG, OF LEIPSIC, GERMANY.

SEWAGE-FILTER.

SPECIFICATION forming part of Letters Patent N o. 612,904, dated October25, 1898.

Application filed March 1, 1 8 9 8.

To LZZ whom it may concern:

Be it known that we, Tnnonon HLssNER and PAUL RHRIG, subjects of theKing of Saxony, residing at Leipsic, Kingdom of Saxony, Germany, haveinvented a certain new and useful Sewage-Filter, of which the followingis a specification.

The present invention relates to an apparatus consisting of severalcompartments enabling a permanent discharge of pure water and supply ofsewage, thus insuring an uninterrupted service,while the lters arecleaned mechanically, automatically, and continuously.

The apparatus may be composed of any number of chambers which arecooperating in pairs, but which may also be connected by suitable pipesin groups of four, six, or eight chambers. v

The accompanying drawings, for example, illustrate a single apparatus ofthis kind-t1 c., Figure 1 is a vertical section of it; Fig. 2, avertical longitudinal section 5 Fig. 3,an end view Fig. 4, a horizontalsection through the lter-chamber. Fig. 5 is a plan view of theapparatus.

The apparatus consists of two receptacles, which are divided into twochambers A B` and A2 B2 by the horizontal filter F F2, also of tWoreservoirs C' C2, of which each is respectively connected with the saidchambers by a supply-pipe h b2. From the mains E and O pipes c e2 and oo2,which are provided with valves, lead into the lower chambers B B2,the main E conducting sewage and O conducting oil, petroleum, or benzin.

The lower connection-pipes t' b2 are suitably provided with a box-shapedwidening D D2. From each of these boxes D D2 a pipe d d2, also providedwith a valve, leads outside. The reservoirs C C2 are also connected by apipe c with closure c. The chambers A A2 above the filters F F2 areprovided with water-discharge pipes w to2 with valves, which pipes endin a common collecting-pipe W.V A communication-hole a in the top part,which can be closed by a valve a', connects the two chambers A' and A2.The chambers A' A2 C C2 are also provided with air-valves o o2 'v3 o4.

The function of the apparatus is as follows: Through the main E sewageis let into the Serial No. 672,178. (No model.)

chamber B2, from where it distributes after opening the air-valves o2fu4 in the chambers B2 C2. The sludge deposits at the lowest places,principally in the box D2. While the water runs in, a certain quantityof oil, petroleum, or the like is let through the main pipe O intochamber B2. After the two lower chambers B2 C2 have become full valve o4is closed, and thewater, still entering through c2, presses the oilswimming in chamber B2 on the sewage through the iilter F2, throughwhich the water enters cleaned into the upper chamber A2. Then valve o2is closed, but pipe d opened by the Valve a,also the valves o' and o3.The water in A2 has gradually been lling the chamber A2, the oil haspassed into the chamber A' through a, run through the iilter, loosenedthe particles of dirt below, at, and in the lter, and penetrated withthem into the lower chamber B. The dirt deposited at the bottom and inthe box D2 can then be removed by opening the pipe d2 coming from D2. Bythe pressure of the sewage in E c2 the dirt is pushed outside throughthe pipe d2. If required, a passage from C2 to C is established by thecommuni eating pipe c. By the open pipe 2v2 the clean water in chamberA2 passes into the dischargechannel W. Then sewage is let into B throughpipe c', and the same procedure repeatsin the other chambers.

The novelty in the employment of this apparatus is the use ot oil as acleaning medium for the filters.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1,. A filtering apparatus consisting of two pairs of boxes connectedwith each other, one box of each pair being divided by a horizontalfilter in two compartments A', A2, B', B2 of which the lower ones areprovided with inlet-pipes c', c2 the sewage, oil-supply pipe O andconnecting-pipes b', b2 with sludge-col lecting boxes D', D2,sludge-cleaning pipes CZ', d2 and sludge-depositing boxes C C2 connectedby valve and pipe c' and c with the same part of the other pair,provided with valved dischargempipes tlf/U2 to the main collecting-pipeW, with connecting -pipe and valves a, d between chambers A A2, allcham- IOO bersprovided with tightlycouplin g air-valves QJ', @2,113,122and all inlet and outlet pipes prosupply pipes, substantially as and forthe ro vided with tight-closing' devices,substan'ially purpose setforth.

as and for the purpose set forth. In witness whereof we have signed this2. The Combination of several filtering apspecification in the presenceof two Witnesses. 5 paratus with Closed filter-boxes arranged in THEODORHLSSNER pairs, with horizontal lters, oil-supply, mu- PAUL RHRIGLwally-Connected sludge-depositing boxes and Witnesses: separatedsludge-oolleoing boxes combined RUDOLPH FRICKE,

into one group by common sewage and oil ERNST REGLER

